Effect of Seeding Density on Mat-Type Seedling Quality for Mechanical Transplanting in Dry Season Rice

Shaikh, Nilufar Yasmin; Alam, Md. Ashraful; Kamruzzaman, Mohammad; Mamun, Md. Abdullah Al; Islam, Akm Saiful

doi:10.4236/as.2021.1211078

Cited by 6 publications

(4 citation statements)

References 15 publications

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“…At 21 days after sowing, seedling height gradually decreased with the increase of seed rate. The seedling height for mat-type seedling raising is one of the major criteria in mechanical transplanting and the lowest seedling height increased the buried hill [20]. Different organic soil media influenced the seedling height upto 17.06 mm whereas the optimum seedling height is 120 mm which is coincided with the study [21] [22].…”

Section: Seedling Heightsupporting

confidence: 68%

Determination of Optimum Seed Rate of Hybrid Rice (<i>Oryza sativa</i> L.) Varieties in Mat-Type Seedling Raising for Mechanical Transplanting

Hossen¹,

Kamruzzaman²,

Islam³

et al. 2022

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Rice is the most important and crucial to ensuring food and dietary energy security in most developing countries and is the staple food of more than half of the world's population. This study was conducted to identify the seed rate of hybrid rice varieties for mechanical transplanting during Boro (irrigated dry season), 2021-22 season at BRRI research field, Gazipur. Slender grain type BRRI hybrid dhan3, BRRI hybrid dhan5, Ishpahani hybrid dhan6, and BRRI dhan89 were used in the study. The same growth medium was used to establish mat-type seedlings on plastic trays (280 × 80 × 25 mm) at seed rates of 80, 90, 100, 110, and 120 g•tray −1 . Walk-behind type 04 rows rice transplanter (Daedong, model-DP 488) was used during transplanting in the field at the set of the plant to plant spacing of 140 mm while line-to-line spacing was fixed to 300 mm. The result depicted that regardless of the variety, seedling density increased linearly as seed rate increased, except for the 21 days following sowing. However, the seedling density of BRRI dhan89 decreased after the seed rate of 100 g•tray −1 due to mortality. The seedling height of the BRRI hybrids dhan5 and Ishpahani hybrid dhan6 was significantly higher than that of the BRRI hybrid dhan3 and BRRI dhan89. After 21 days, the seedling height decreased significantly with the increase in seed rate. For the seed rates of 100, 110, and 120 g•tray −1 , identical numbers of hills per unit area and plants per hill were observed. On the other hand, regardless of the variety, the percentage of missing hills considerably decreased with the increased seed rate. The yield of the BRRI hybrid dhan5 variety was significantly higher at the seed rates of 100 and 110 g•tray −1 , although the yield of the Ishpahani hybrid dhan6 variety was comparable. In terms of yield among the four varieties, BRRI hybrid dhan5 gave a higher yield followed by Ishpahani hybrid dhan6 while BRRI dhan89 gave a lower yield compared to the hybrid varieties irrespective of the seed rate. However, a

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Section: Seedling Heightsupporting

confidence: 68%

Determination of Optimum Seed Rate of Hybrid Rice (<i>Oryza sativa</i> L.) Varieties in Mat-Type Seedling Raising for Mechanical Transplanting

Hossen¹,

Kamruzzaman²,

Islam³

et al. 2022

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“…Resulting in a total of 12 unique tray, each representing a specific seed density and soil volume combination. Seeds were uniformly spread by hand across all trays to ensure consistent seeding density [16].…”

Section: Nursery Tray Preparationmentioning

confidence: 99%

“…The careful manipulation of seed density and depth of filling (soil media/mixture) within nursery trays offers a tangible pathway to achieving these goals. The significance of the seed density lies in its direct influence on seedling density and spacing within trays, determining not only the number of seedlings per pick but also the uniformity of distribution [8]. The depth of filling in the tray is of paramount importance as it directly influences seedling root development, mat formation, and overall tray quality.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Nursery Trays for Minimizing Seedlings per Pick of Transplanter in SRI

Gund,

Dhananchezhiyan,

Kavitha

et al. 2023

IJECC

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The System of Rice Intensification (SRI) revolutionizes rice cultivation through innovative practices. It is a methodology that enhances rice yields by optimizing plant growth and resource utilization. This study, conducted in 2023 at TNAU, Coimbatore, India, focuses on the optimization of nursery tray configurations for enhanced seedlings per pick during rice transplantation, contributing to more efficient SRI cultivation. The selection of nursery trays plays a crucial role in determining seedling distribution, impacting crop yield and agricultural efficiency. Through the manipulation of seed density, depth of filling, and tray configuration, the research aims to improve the seedlings' per-pick outcome during mechanized transplantation. The investigation involves 12 tray combinations with varying seed density (40 gm, 60 gm, 80 gm, and 100 gm) and depth of fillings with different heights in tray (15 mm, 20 mm, and 25 mm). Seedling growth parameters are meticulously assessed, including shoot length and root length to evaluate tray efficacy. The study also analyzes transplanter compatibility and the influence of seed density and depth of filling on seedling growth. Results highlight the tray configuration with an 80 gm seed density and 25 mm soil height as optimal, offering 1-3 seedlings per pick and minimal missing hills less than 1%. The endeavor to minimize picks per hill through precise tray combinations represents a crucial step in addressing the challenges of modern agriculture and shaping a more sustainable and productive future.

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“…The experiment was conducted in Gazipur, Tangail, and Rangpur locations. Seeds from three Boro rice varieties BRRI dhan86 (V1), BRRI dhan89 (V2), and BRRI dhan92 (V3) were used for this experiment Shaikh et al (2021). observed that the seeding rate of 150 -160 g tray -1 was found better for raising mat-type seedlings suitable for mechanical transplanting.…”

mentioning

confidence: 99%

Effect of seeding date on the tray raised seedling quality for rice transplanter in Boro season

Shaikh¹,

Alam²,

Islam³

2022

J sci technol environ inform

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Mechanical rice transplanter needs a special type of seedling raised in-tray. Low temperature affected the quality of rice seedlings in Boro season. The purpose of this study was to find out the effect of seeding date on the properties of tray-type seedlings of three rice varieties namely BRRI dhan86, BRRI dhan89 and BRRI dhan92. This study was conducted in three locations namely Tangail, Rangpur and Gazipur in the Boro season of 2019-20. Four sowing date and three locations were considered and two factorial randomized completely block design (RCBD) with three replications was followed in the study. Characteristics of tray-raised rice seedlings suitable for mechanical transplanting in Boro season were revealed by this study. Seedling height and leaf number satisfied the requirement of transplanting. Seedling emergence was completed within 10 days after sowing (DAS). Seedling mortality of the tested three varieties started after 25 DAS in all locations. The seedling survival rate of BRRI dhan92, BRRI dhan89 and BRRI dhan86 exhibited the highest differently in a different location. The highest stem thickness of seedling was observed in all the tested varieties if seeds were sown on the 2nd and 3rd week of December in Gazipur and Rangpur location and 3rd and 4th week of December in Rangpur location. All the tested varieties showed a stem thickness of more than 1.5 mm. The highest stem strength was obtained if seeds were sown in the tray on the 3rd week of December. Variety showed inconsistent results on stem strength. The 2nd and 3rd week of December is an appropriate seeding time for optimum seedling height, stem strength and stem thickness in three locations. Seeding time affected the seedling emergence, mortality and height in the Boro season due to temperature variations and cold waves.

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Effect of Seeding Density on Mat-Type Seedling Quality for Mechanical Transplanting in Dry Season Rice

Cited by 6 publications

References 15 publications

Determination of Optimum Seed Rate of Hybrid Rice (<i>Oryza sativa</i> L.) Varieties in Mat-Type Seedling Raising for Mechanical Transplanting

Determination of Optimum Seed Rate of Hybrid Rice (<i>Oryza sativa</i> L.) Varieties in Mat-Type Seedling Raising for Mechanical Transplanting

Optimizing Nursery Trays for Minimizing Seedlings per Pick of Transplanter in SRI

Effect of seeding date on the tray raised seedling quality for rice transplanter in Boro season

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Effect of Seeding Density on Mat-Type Seedling Quality for Mechanical Transplanting in Dry Season Rice

Cited by 6 publications

References 15 publications

Determination of Optimum Seed Rate of Hybrid Rice (&lt;i&gt;Oryza sativa&lt;/i&gt; L.) Varieties in Mat-Type Seedling Raising for Mechanical Transplanting

Determination of Optimum Seed Rate of Hybrid Rice (&lt;i&gt;Oryza sativa&lt;/i&gt; L.) Varieties in Mat-Type Seedling Raising for Mechanical Transplanting

Optimizing Nursery Trays for Minimizing Seedlings per Pick of Transplanter in SRI

Effect of seeding date on the tray raised seedling quality for rice transplanter in Boro season

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Product

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Determination of Optimum Seed Rate of Hybrid Rice (<i>Oryza sativa</i> L.) Varieties in Mat-Type Seedling Raising for Mechanical Transplanting

Determination of Optimum Seed Rate of Hybrid Rice (<i>Oryza sativa</i> L.) Varieties in Mat-Type Seedling Raising for Mechanical Transplanting